code: def test_create_span_underscore():
      span = Mock(doc=Mock(), start=0, end=2)
      uscore = Underscore(
          Underscore.span_extensions,
          span,
          start=span.start,
          end=span.end,
      )
      assert uscore._doc is span.doc
      assert uscore._start is span.start
      assert uscore._end is span.end
  
file_path: spaCy/spacy/tests/doc/test_underscore.py
imports: import pytest
  from mock import Mock
  from spacy.tokens import Doc, Span, Token
  from spacy.tokens.underscore import Underscore
label_desc: Use image node_id 4 for calling a global function with example usage: test_create_span_underscore() without return types